src/storage/browser/fileapi/sandbox_file_system_backend.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
   6 #define STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "storage/browser/fileapi/file_system_backend.h"
  16 #include "storage/browser/fileapi/file_system_quota_util.h"
  17 #include "storage/browser/fileapi/sandbox_file_system_backend_delegate.h"
  18 #include "storage/browser/fileapi/task_runner_bound_observer_list.h"
  19 #include "storage/browser/quota/special_storage_policy.h"
  20 #include "storage/browser/storage_browser_export.h"
  21
  22 namespace storage {
  23
  24 // TEMPORARY or PERSISTENT filesystems, which are placed under the user's
  25 // profile directory in a sandboxed way.
  26 // This interface also lets one enumerate and remove storage for the origins
  27 // that use the filesystem.
  28 class STORAGE_EXPORT SandboxFileSystemBackend
  29     : public FileSystemBackend {
  30  public:
  31   explicit SandboxFileSystemBackend(SandboxFileSystemBackendDelegate* delegate);
  32   virtual ~SandboxFileSystemBackend();
  33
  34   // FileSystemBackend overrides.
  35   virtual bool CanHandleType(FileSystemType type) const OVERRIDE;
  36   virtual void Initialize(FileSystemContext* context) OVERRIDE;
  37   virtual void ResolveURL(const FileSystemURL& url,
  38                           OpenFileSystemMode mode,
  39                           const OpenFileSystemCallback& callback) OVERRIDE;
  40   virtual AsyncFileUtil* GetAsyncFileUtil(FileSystemType type) OVERRIDE;
  41   virtual WatcherManager* GetWatcherManager(FileSystemType type) OVERRIDE;
  42   virtual CopyOrMoveFileValidatorFactory* GetCopyOrMoveFileValidatorFactory(
  43       FileSystemType type,
  44       base::File::Error* error_code) OVERRIDE;
  45   virtual FileSystemOperation* CreateFileSystemOperation(
  46       const FileSystemURL& url,
  47       FileSystemContext* context,
  48       base::File::Error* error_code) const OVERRIDE;
  49   virtual bool SupportsStreaming(const FileSystemURL& url) const OVERRIDE;
  50   virtual bool HasInplaceCopyImplementation(
  51       storage::FileSystemType type) const OVERRIDE;
  52   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
  53       const FileSystemURL& url,
  54       int64 offset,
  55       int64 max_bytes_to_read,
  56       const base::Time& expected_modification_time,
  57       FileSystemContext* context) const OVERRIDE;
  58   virtual scoped_ptr<FileStreamWriter> CreateFileStreamWriter(
  59       const FileSystemURL& url,
  60       int64 offset,
  61       FileSystemContext* context) const OVERRIDE;
  62   virtual FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
  63   virtual const UpdateObserverList* GetUpdateObservers(
  64       FileSystemType type) const OVERRIDE;
  65   virtual const ChangeObserverList* GetChangeObservers(
  66       FileSystemType type) const OVERRIDE;
  67   virtual const AccessObserverList* GetAccessObservers(
  68       FileSystemType type) const OVERRIDE;
  69
  70   // Returns an origin enumerator of this backend.
  71   // This method can only be called on the file thread.
  72   SandboxFileSystemBackendDelegate::OriginEnumerator* CreateOriginEnumerator();
  73
  74   void set_enable_temporary_file_system_in_incognito(bool enable) {
  75     enable_temporary_file_system_in_incognito_ = enable;
  76   }
  77   bool enable_temporary_file_system_in_incognito() const {
  78     return enable_temporary_file_system_in_incognito_;
  79   }
  80
  81
  82  private:
  83   SandboxFileSystemBackendDelegate* delegate_;  // Not owned.
  84
  85   bool enable_temporary_file_system_in_incognito_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(SandboxFileSystemBackend);
  88 };
  89
  90 }  // namespace storage
  91
  92 #endif  // STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_